Portions of a post supported mail box



FIG. 1 is a perspective view showing front, top, and right side portionsof a post supported mailbox of our new design, the broken lines are forillustrative purposes only and form no part of the claimed design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a right side view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a left side view thereof;

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan view thereof.

We claim the ornamental design for portions of a post supported mailbox, as shown and described.